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Technical Data Sheet
PartsTable / COMPONENT / C31-30894A1
C31-30894A1 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, cup_width: 0.7500 INCHES NOMINAL IN, cone_width: 1.0000 INCHES NOMINAL IN, bore_diameter: 1.7500 INCHES NOMINAL IN, overall_width: 0.9375 INCHES NOMINAL IN, standout_width: 0.1875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5303, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
C31-30894A1
NSN: 3110-00-100-5303
FSC: 3110
CAGE: 88907 — BRUNSWICK CORP DBA MERCURY MARINE DIV MERCURY MARINE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.7500 INCHES NOMINAL IN
cone_width1.0000 INCHES NOMINAL IN
bore_diameter1.7500 INCHES NOMINAL IN
overall_width0.9375 INCHES NOMINAL IN
standout_width0.1875 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, NORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0310 INCHES NOMINAL IN
overall_outside_diameter3.2650 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-5303
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: C31-30894A1 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BACKFACE CORNER RADIUS: 0.0310 INCHES NOMINAL IN
•
BORE DIAMETER: 1.7500 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 3.2650 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
BACKFACE CORNER RADIUS0.0310 INCHES NOMINAL IN
BORE DIAMETER1.7500 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER3.2650 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OVERALL WIDTH0.9375 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
CONE WIDTH1.0000 INCHES NOMINAL IN
CUP WIDTH0.7500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
206576Interchangeable
interchangeable cross-reference
interchangeable
12313046Interchangeable
interchangeable cross-reference
interchangeable
154940Interchangeable
interchangeable cross-reference
interchangeable
25520-25578Interchangeable
interchangeable cross-reference
interchangeable
75073Interchangeable
interchangeable cross-reference
interchangeable
1751806Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C31-30894A1?
C31-30894A1 is a BEARING,ROLLER,TAPERED.
What parts can replace C31-30894A1?
There are 22 known substitutes for C31-30894A1: 206576, 12313046, 154940 and 19 more. Substitute compatibility should be verified for your specific system.
Is C31-30894A1 still available?
C31-30894A1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026